【摘要】 基于计算流体力学-离散元方法，模拟研究导电炭黑SP（以下简称SP）在长水平直管段中的气力输送特性。结果表明：在同一输送风速下，随着SP颗粒质量流率的增大，长水平直管段中管道单位压降增大；在同一SP颗粒质量流率下，随着输送风速的增大，长水平直管段中管道单位压降也增大；当SP颗粒质量流率为0.173 kg·s^-1、输送风速为12.5m·s^-1时，长水平直管段中管道最大单位压降为388.41 Pa·m^-1；当SP颗粒质量流率为0.173 kg·s^-1、输送风速为6.8.5,10.5,12.5 m·s^-1时，SP颗粒输送流态均为由密相流、过渡流、稀相流3种流态组合而成的分层流。更多还原

【Abstract】 Based on the computational fluid dynamics-discrete element method（CFD-DEM）,the pneumatic conveying characteristics of conductive carbon black SP（hereinafter referred to as SP） in a long horizontal straight pipe section were simulated for study. The results showed that at the same conveying wind speed,the unit pressure drop of the pipeline in the long horizontal straight pipe section increased with the increase of SP particle mass flow rate. Under the same SP particle mass flow rate,the unit pressure drop of the pipeline in the long horizontal straight pipe section also increased with the increase of conveying wing speed.When the SP particle mass flow rate was 0. 173 kg·s^-1 and the conveying wind speed was 12. 5 m·s^-1,the maximum unit pressure drop of the pipeline in the long horizontal straight pipe sections was 388. 41 Pa·m^-1. When the SP particle mass flow rate was 0. 173 kg·s^-1 and the conveying wind speed was 6. 5,8. 5,10. 5 and 12. 5 m·s^-1,the conveying flow states of SP particles were layered flow composed of three flow states:dense-phase flow,transitional flow and dilute-phase flow.更多还原